How do u know when a pokemon has pokerus?

Top Voted Answer

When you check your pokemon's status, you will see the letters PKRS inside a purple box. That means your pokemon is currently infected. It is very obvious to see if you get it. If you see a smiley face on the bottom right hand corner of your pokemons picture, it means it has pokerus cured. It still gains the EV boost but cannot infect other pokemon. Pokerus is cured at midnight, and pokerus pokemon in your PC do not lose it at midnight. You spread it by engaging on battles with the infected pokemon in your party